$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtdoc.git /var/lib/mock/f45-build-34014-676/root/chroot_tmpdir/scmroot/qt5-qtdoc
Cloning into '/var/lib/mock/f45-build-34014-676/root/chroot_tmpdir/scmroot/qt5-qtdoc'...
$ git fetch origin 0b2c4d44bb52d5f3293b55604b6daf97015c5b96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtdoc
 * [new ref]         0b2c4d44bb52d5f3293b55604b6daf97015c5b96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b2c4d4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild