$ git clone -n https://src.fedoraproject.org/rpms/dvtm.git /var/lib/mock/f45-build-7855-370/root/chroot_tmpdir/scmroot/dvtm
Cloning into '/var/lib/mock/f45-build-7855-370/root/chroot_tmpdir/scmroot/dvtm'...
$ git fetch origin 9d399a870ed04fe7833028adba2088c81e637a01:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dvtm
 * [new ref]         9d399a870ed04fe7833028adba2088c81e637a01 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d399a8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild