$ git clone -n https://src.fedoraproject.org/rpms/vmtouch.git /var/lib/mock/f45-build-38172-722/root/chroot_tmpdir/scmroot/vmtouch
Cloning into '/var/lib/mock/f45-build-38172-722/root/chroot_tmpdir/scmroot/vmtouch'...
$ git fetch origin 309d48302fddce56c80fc4b4e47979d3859c6736:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vmtouch
 * [new ref]         309d48302fddce56c80fc4b4e47979d3859c6736 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 309d483 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild