$ git clone -n https://src.fedoraproject.org/rpms/xmake.git /var/lib/mock/f41-build-856404-167597/root/chroot_tmpdir/scmroot/xmake
Cloning into '/var/lib/mock/f41-build-856404-167597/root/chroot_tmpdir/scmroot/xmake'...
$ git fetch origin 8dbafe26b49b7e6afcf7dffbc999aaaddd5c0d63:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xmake
 * [new ref]         8dbafe26b49b7e6afcf7dffbc999aaaddd5c0d63 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8dbafe2 Update to 2.9.5 upstream release