$ git clone -n https://src.fedoraproject.org/rpms/gnome-doc-utils.git /var/lib/mock/f41-build-756777-13422/root/chroot_tmpdir/scmroot/gnome-doc-utils
Cloning into '/var/lib/mock/f41-build-756777-13422/root/chroot_tmpdir/scmroot/gnome-doc-utils'...
$ git fetch origin ffe9f0ce5500d8c23cfd7e70edb0f7423844e3cc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-doc-utils
 * [new ref]         ffe9f0ce5500d8c23cfd7e70edb0f7423844e3cc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ffe9f0c Eliminate use of obsolete %patchN syntax (#2283636)