$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-CheckDeps.git /var/lib/mock/f45-build-26570-618/root/chroot_tmpdir/scmroot/perl-Test-CheckDeps
Cloning into '/var/lib/mock/f45-build-26570-618/root/chroot_tmpdir/scmroot/perl-Test-CheckDeps'...
$ git fetch origin cf30c2f08041627861761ec4e435a0bb24238f26:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-CheckDeps
 * [new ref]         cf30c2f08041627861761ec4e435a0bb24238f26 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf30c2f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild