Fix pinned repos #31

Job	Run time
build (centos, 7, centos-7, centos-7/Containerfile)	9m 50s
build (rockylinux, 8, rockylinux-8, rockylinux-8/Containerfile)	8m 41s
build (rockylinux, 8.6, rockylinux-8, rockylinux-8/Containerfile-8.6)	8m 54s
build (rockylinux, 8.7, rockylinux-8, rockylinux-8/Containerfile-8.7)	11m 4s
build (rockylinux, 8.8, rockylinux-8, rockylinux-8/Containerfile-8.8)	8m 14s
build (rockylinux, 9, rockylinux-9, rockylinux-9/Containerfile)	18s
build (rockylinux, 9, rockylinux-9, rockylinux-9/Containerfile-9.0)	8m 19s
build (rockylinux, 9.1, rockylinux-9, rockylinux-9/Containerfile-9.1)	10m 11s
build (leap, 15, leap, leap/Containerfile.15)	7m 30s
build (leap, latest, leap, leap/Containerfile)	7m 23s
	1h 20m 24s

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