$ git clone -n https://src.fedoraproject.org/rpms/htop.git /var/lib/mock/f42-build-side-1-3498834-45963/root/chroot_tmpdir/scmroot/htop
Cloning into '/var/lib/mock/f42-build-side-1-3498834-45963/root/chroot_tmpdir/scmroot/htop'...
$ git fetch origin 1b3041d5ca308874a6877f44820116dc19c3e42d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/htop
 * [new ref]         1b3041d5ca308874a6877f44820116dc19c3e42d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b3041d Update to v3.4.1