$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtscxml.git /var/lib/mock/f42-build-side-1-3539491-46565/root/chroot_tmpdir/scmroot/qt5-qtscxml
Cloning into '/var/lib/mock/f42-build-side-1-3539491-46565/root/chroot_tmpdir/scmroot/qt5-qtscxml'...
$ git fetch origin 1ef42cd7b3284a4739c19819673ef989061ba365:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtscxml
 * [new ref]         1ef42cd7b3284a4739c19819673ef989061ba365 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ef42cd 5.15.17