$ git clone -n https://src.fedoraproject.org/rpms/perl-TestML.git /var/lib/mock/f45-build-26978-620/root/chroot_tmpdir/scmroot/perl-TestML
Cloning into '/var/lib/mock/f45-build-26978-620/root/chroot_tmpdir/scmroot/perl-TestML'...
$ git fetch origin 3224e6448bf5d66775f6c69ac121deb2b6092349:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-TestML
 * [new ref]         3224e6448bf5d66775f6c69ac121deb2b6092349 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3224e64 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild