$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtlocation.git /var/lib/mock/f39-build-2189981-51428/root/chroot_tmpdir/scmroot/qt5-qtlocation
Cloning into '/var/lib/mock/f39-build-2189981-51428/root/chroot_tmpdir/scmroot/qt5-qtlocation'...
$ git fetch origin b4f66fff53c37395d6260f2fb212dd21062e37ca:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtlocation
 * [new ref]         b4f66fff53c37395d6260f2fb212dd21062e37ca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4f66ff 5.15.12