$ git clone -n https://src.fedoraproject.org/rpms/perl-Time-Tiny.git /var/lib/mock/f39-build-1514690-35645/root/chroot_tmpdir/scmroot/perl-Time-Tiny
Cloning into '/var/lib/mock/f39-build-1514690-35645/root/chroot_tmpdir/scmroot/perl-Time-Tiny'...
$ git fetch origin 90e2b8e409c84fb83ce31cce25e73ed94a216689:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Time-Tiny
 * [new ref]         90e2b8e409c84fb83ce31cce25e73ed94a216689 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 90e2b8e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild