$ git clone -n https://src.fedoraproject.org/rpms/calamaris.git /var/lib/mock/f39-build-1456338-32922/root/chroot_tmpdir/scmroot/calamaris
Cloning into '/var/lib/mock/f39-build-1456338-32922/root/chroot_tmpdir/scmroot/calamaris'...
$ git fetch origin 0fcf09c61870f5ff847273c3830b49a8a844d2c6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/calamaris
 * [new ref]         0fcf09c61870f5ff847273c3830b49a8a844d2c6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0fcf09c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild