$ git clone -n https://src.fedoraproject.org/rpms/httpcomponents-core.git /var/lib/mock/f41-build-2442895-25478/root/chroot_tmpdir/scmroot/httpcomponents-core
Cloning into '/var/lib/mock/f41-build-2442895-25478/root/chroot_tmpdir/scmroot/httpcomponents-core'...
$ git fetch origin baebb117419bad92c1c7f4593595c0522ff8e038:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/httpcomponents-core
 * [new ref]         baebb117419bad92c1c7f4593595c0522ff8e038 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at baebb11 Convert to %autorelease and %autochangelog