$ git clone -n https://src.fedoraproject.org/rpms/volumeicon.git /var/lib/mock/f45-build-38170-722/root/chroot_tmpdir/scmroot/volumeicon
Cloning into '/var/lib/mock/f45-build-38170-722/root/chroot_tmpdir/scmroot/volumeicon'...
$ git fetch origin ce055082808940339ae77691202abcaad528212b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/volumeicon
 * [new ref]         ce055082808940339ae77691202abcaad528212b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ce05508 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild