$ git clone -n https://src.fedoraproject.org/rpms/mythes-bg.git /var/lib/mock/f40-build-2012273-45780/root/chroot_tmpdir/scmroot/mythes-bg
Cloning into '/var/lib/mock/f40-build-2012273-45780/root/chroot_tmpdir/scmroot/mythes-bg'...
$ git fetch origin e1587a258a224edff5122f2dc35b50a3d7b28d69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mythes-bg
 * [new ref]         e1587a258a224edff5122f2dc35b50a3d7b28d69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1587a2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild