$ git clone -n https://src.fedoraproject.org/rpms/itstool.git /var/lib/mock/f39-build-1453388-32880/root/chroot_tmpdir/scmroot/itstool
Cloning into '/var/lib/mock/f39-build-1453388-32880/root/chroot_tmpdir/scmroot/itstool'...
$ git fetch origin af4e37f48abb0e22da68a4c713eeb3f358442f3c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/itstool
 * [new ref]         af4e37f48abb0e22da68a4c713eeb3f358442f3c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at af4e37f Fix insufficiently quoted regular expressions