$ git clone -n https://src.fedoraproject.org/rpms/rust-crc-any.git /var/lib/mock/f41-build-3152104-40629/root/chroot_tmpdir/scmroot/rust-crc-any
Cloning into '/var/lib/mock/f41-build-3152104-40629/root/chroot_tmpdir/scmroot/rust-crc-any'...
$ git fetch origin af9503eab0cf3a59f95c0436b26db538283c8648:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-crc-any
 * [new ref]         af9503eab0cf3a59f95c0436b26db538283c8648 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at af9503e Update to 2.5.0