$ git clone -n https://src.fedoraproject.org/rpms/libgravatar.git /var/lib/mock/f42-build-3352101-45014/root/chroot_tmpdir/scmroot/libgravatar
Cloning into '/var/lib/mock/f42-build-3352101-45014/root/chroot_tmpdir/scmroot/libgravatar'...
$ git fetch origin b4413aaa9d9233608821e643b0d906457b6910cc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libgravatar
 * [new ref]         b4413aaa9d9233608821e643b0d906457b6910cc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4413aa 24.12.3