$ git clone -n https://src.fedoraproject.org/rpms/rhythmbox.git /var/lib/mock/f39-build-1766770-41501/root/chroot_tmpdir/scmroot/rhythmbox
Cloning into '/var/lib/mock/f39-build-1766770-41501/root/chroot_tmpdir/scmroot/rhythmbox'...
$ git fetch origin 55bc23fb8411523f3feb7306cfb6eba687732118:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rhythmbox
 * [new ref]         55bc23fb8411523f3feb7306cfb6eba687732118 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 55bc23f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild