$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtquickcontrols2.git /var/lib/mock/f40-build-800417-143529/root/chroot_tmpdir/scmroot/qt5-qtquickcontrols2
Cloning into '/var/lib/mock/f40-build-800417-143529/root/chroot_tmpdir/scmroot/qt5-qtquickcontrols2'...
$ git fetch origin 509586f20a39033d463e3fa2a392117fdc7a9d26:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtquickcontrols2
 * [new ref]         509586f20a39033d463e3fa2a392117fdc7a9d26 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 509586f 5.15.13