$ git clone -n https://src.fedoraproject.org/rpms/hedgewars.git /var/lib/mock/f38-build-side-42-init-devel-1062406-29769/root/chroot_tmpdir/scmroot/hedgewars
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1062406-29769/root/chroot_tmpdir/scmroot/hedgewars'...
$ git fetch origin c5ea683a6e24c3db2cf32fcb8293b1c682e82eda:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hedgewars
 * [new ref]         c5ea683a6e24c3db2cf32fcb8293b1c682e82eda -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c5ea683 remove some trailing whitespaces