$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtscript.git /var/lib/mock/f41-build-811767-147521/root/chroot_tmpdir/scmroot/qt5-qtscript
Cloning into '/var/lib/mock/f41-build-811767-147521/root/chroot_tmpdir/scmroot/qt5-qtscript'...
$ git fetch origin 076a98a83e587d0dd3376eeba33b9a876f6792d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtscript
 * [new ref]         076a98a83e587d0dd3376eeba33b9a876f6792d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 076a98a 5.15.14