$ git clone -n https://src.fedoraproject.org/rpms/rust-lib0.git /var/lib/mock/f40-build-2513070-61714/root/chroot_tmpdir/scmroot/rust-lib0
Cloning into '/var/lib/mock/f40-build-2513070-61714/root/chroot_tmpdir/scmroot/rust-lib0'...
$ git fetch origin 45ae8a059a596067f293f7684ef4f5eca707e240:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-lib0
 * [new ref]         45ae8a059a596067f293f7684ef4f5eca707e240 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 45ae8a0 Orphaned for 6+ weeks