$ git clone -n https://src.fedoraproject.org/rpms/crossguid2.git /var/lib/mock/f45-build-5386-339/root/chroot_tmpdir/scmroot/crossguid2
Cloning into '/var/lib/mock/f45-build-5386-339/root/chroot_tmpdir/scmroot/crossguid2'...
$ git fetch origin 0937fe7417ebeab7ff6c1badebba29b942d45848:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crossguid2
 * [new ref]         0937fe7417ebeab7ff6c1badebba29b942d45848 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0937fe7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild