$ git clone -n https://src.fedoraproject.org/rpms/httpcomponents-project.git /var/lib/mock/f41-build-side-1-2828120-33518/root/chroot_tmpdir/scmroot/httpcomponents-project
Cloning into '/var/lib/mock/f41-build-side-1-2828120-33518/root/chroot_tmpdir/scmroot/httpcomponents-project'...
$ git fetch origin 7ca0b7744adcd7e4c2d50c9211658d697230db7b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/httpcomponents-project
 * [new ref]         7ca0b7744adcd7e4c2d50c9211658d697230db7b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ca0b77 Switch javapackages tests to f41 branch