$ git clone -n https://src.fedoraproject.org/rpms/dt.git /var/lib/mock/f41-build-1018492-17947/root/chroot_tmpdir/scmroot/dt
Cloning into '/var/lib/mock/f41-build-1018492-17947/root/chroot_tmpdir/scmroot/dt'...
$ git fetch origin 77557fbacc882f071e435d524c9d68edfa6a554f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dt
 * [new ref]         77557fbacc882f071e435d524c9d68edfa6a554f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77557fb Eliminate use of obsolete %patchN syntax (#2283636)