$ git clone -n https://src.fedoraproject.org/rpms/openms.git /var/lib/mock/f42-build-3354206-45019/root/chroot_tmpdir/scmroot/openms
Cloning into '/var/lib/mock/f42-build-3354206-45019/root/chroot_tmpdir/scmroot/openms'...
$ git fetch origin 948f450798a3c4dc17d6ac286171a20d7fc0d550:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openms
 * [new ref]         948f450798a3c4dc17d6ac286171a20d7fc0d550 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 948f450 Switch to std=gnu17