$ git clone -n https://src.fedoraproject.org/rpms/libXcursor.git /var/lib/mock/f41-build-side-1-3071664-38810/root/chroot_tmpdir/scmroot/libXcursor
Cloning into '/var/lib/mock/f41-build-side-1-3071664-38810/root/chroot_tmpdir/scmroot/libXcursor'...
$ git fetch origin 175f3e3a7bc2a79cceb1200d61400a4223dbc95e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libXcursor
 * [new ref]         175f3e3a7bc2a79cceb1200d61400a4223dbc95e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 175f3e3 libXcursor 1.2.3