$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtquickcontrols2.git /var/lib/mock/f45-build-34046-676/root/chroot_tmpdir/scmroot/qt5-qtquickcontrols2
Cloning into '/var/lib/mock/f45-build-34046-676/root/chroot_tmpdir/scmroot/qt5-qtquickcontrols2'...
$ git fetch origin 4b74f6d256609ecf3124f1a50fee53b0d9e790bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtquickcontrols2
 * [new ref]         4b74f6d256609ecf3124f1a50fee53b0d9e790bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4b74f6d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild