$ git clone -n https://src.fedoraproject.org/rpms/rust-alphanumeric-sort.git /var/lib/mock/f45-build-40026-767/root/chroot_tmpdir/scmroot/rust-alphanumeric-sort
Cloning into '/var/lib/mock/f45-build-40026-767/root/chroot_tmpdir/scmroot/rust-alphanumeric-sort'...
$ git fetch origin b783d1f875e9c22367491d40a618f5b2c059b17f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-alphanumeric-sort
 * [new ref]         b783d1f875e9c22367491d40a618f5b2c059b17f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b783d1f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild