$ git clone -n https://src.fedoraproject.org/rpms/libmpd.git /var/lib/mock/f41-build-817555-14305/root/chroot_tmpdir/scmroot/libmpd
Cloning into '/var/lib/mock/f41-build-817555-14305/root/chroot_tmpdir/scmroot/libmpd'...
$ git fetch origin 459da3667a52f639a3ac82574141e787b1e15aa5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmpd
 * [new ref]         459da3667a52f639a3ac82574141e787b1e15aa5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 459da36 Eliminate use of obsolete %patchN syntax (#2283636)