$ git clone -n https://src.fedoraproject.org/rpms/kcov.git /var/lib/mock/f40-build-2199632-51751/root/chroot_tmpdir/scmroot/kcov
Cloning into '/var/lib/mock/f40-build-2199632-51751/root/chroot_tmpdir/scmroot/kcov'...
$ git fetch origin e3a586c13c4b97189392ab47a2eb230f9f387dc0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kcov
 * [new ref]         e3a586c13c4b97189392ab47a2eb230f9f387dc0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3a586c Bump version to 42