$ git clone -n https://src.fedoraproject.org/rpms/gtk-unico-engine.git /var/lib/mock/f39-build-1464836-33533/root/chroot_tmpdir/scmroot/gtk-unico-engine
Cloning into '/var/lib/mock/f39-build-1464836-33533/root/chroot_tmpdir/scmroot/gtk-unico-engine'...
$ git fetch origin 5f39786a1b450edfb2177bb8aca788a25bcd23d4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtk-unico-engine
 * [new ref]         5f39786a1b450edfb2177bb8aca788a25bcd23d4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f39786 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild