$ git clone -n https://src.fedoraproject.org/rpms/mingw-vulkan-loader.git /var/lib/mock/f40-build-2228626-53093/root/chroot_tmpdir/scmroot/mingw-vulkan-loader
Cloning into '/var/lib/mock/f40-build-2228626-53093/root/chroot_tmpdir/scmroot/mingw-vulkan-loader'...
$ git fetch origin 0b4f9d23f0b59cae590932c3fda974caa7df6d55:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-vulkan-loader
 * [new ref]         0b4f9d23f0b59cae590932c3fda974caa7df6d55 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b4f9d2 Fix %files