$ git clone -n https://src.fedoraproject.org/rpms/libeconf.git /var/lib/mock/f42-build-side-1-3534262-46548/root/chroot_tmpdir/scmroot/libeconf
Cloning into '/var/lib/mock/f42-build-side-1-3534262-46548/root/chroot_tmpdir/scmroot/libeconf'...
$ git fetch origin 7abf4c4ff77f8fa7e9f64943aba4d94fe2618354:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libeconf
 * [new ref]         7abf4c4ff77f8fa7e9f64943aba4d94fe2618354 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7abf4c4 Segfault fix