$ git clone -n https://src.fedoraproject.org/rpms/libfm.git /var/lib/mock/f41-build-750608-13382/root/chroot_tmpdir/scmroot/libfm
Cloning into '/var/lib/mock/f41-build-750608-13382/root/chroot_tmpdir/scmroot/libfm'...
$ git fetch origin ad54cbaac6b3bfee838777aee7d754d65400ef50:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libfm
 * [new ref]         ad54cbaac6b3bfee838777aee7d754d65400ef50 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad54cba Ignore po/ directory make check error with autoconf 2.72