$ git clone -n https://src.fedoraproject.org/rpms/libgravatar.git /var/lib/mock/f42-build-side-1-3569449-46747/root/chroot_tmpdir/scmroot/libgravatar
Cloning into '/var/lib/mock/f42-build-side-1-3569449-46747/root/chroot_tmpdir/scmroot/libgravatar'...
$ git fetch origin dbb1171394c0a1f7f4875feeff5ba797c0378bd2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libgravatar
 * [new ref]         dbb1171394c0a1f7f4875feeff5ba797c0378bd2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dbb1171 25.04.2