$ git clone -n https://src.fedoraproject.org/rpms/finger.git /var/lib/mock/f45-build-8964-397/root/chroot_tmpdir/scmroot/finger
Cloning into '/var/lib/mock/f45-build-8964-397/root/chroot_tmpdir/scmroot/finger'...
$ git fetch origin 39cfbc4d354ea37f25404936e151a408a5d69fba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/finger
 * [new ref]         39cfbc4d354ea37f25404936e151a408a5d69fba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 39cfbc4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild