$ git clone -n https://src.fedoraproject.org/rpms/xorg-x11-xtrans-devel.git /var/lib/mock/f41-build-874464-16213/root/chroot_tmpdir/scmroot/xorg-x11-xtrans-devel
Cloning into '/var/lib/mock/f41-build-874464-16213/root/chroot_tmpdir/scmroot/xorg-x11-xtrans-devel'...
$ git fetch origin 5c463261e23c586876b1155cf1f1f5ac9c45064b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xorg-x11-xtrans-devel
 * [new ref]         5c463261e23c586876b1155cf1f1f5ac9c45064b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c46326 Eliminate use of obsolete %patchN syntax (#2283636)