$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-HasVersion.git /var/lib/mock/f45-build-26687-618/root/chroot_tmpdir/scmroot/perl-Test-HasVersion
Cloning into '/var/lib/mock/f45-build-26687-618/root/chroot_tmpdir/scmroot/perl-Test-HasVersion'...
$ git fetch origin e9e450d5e56683e58e3b2e5e064ea4cee05bd73a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-HasVersion
 * [new ref]         e9e450d5e56683e58e3b2e5e064ea4cee05bd73a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e9e450d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild