$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtwayland.git /var/lib/mock/f39-build-1836439-41921/root/chroot_tmpdir/scmroot/qt5-qtwayland
Cloning into '/var/lib/mock/f39-build-1836439-41921/root/chroot_tmpdir/scmroot/qt5-qtwayland'...
$ git fetch origin 2ff721c9b7894cb8dfd2912744209ac3d9733484:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtwayland
 * [new ref]         2ff721c9b7894cb8dfd2912744209ac3d9733484 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ff721c 5.15.11