$ git clone -n https://src.fedoraproject.org/rpms/mingw-vulkan-headers.git /var/lib/mock/f40-build-2228625-53093/root/chroot_tmpdir/scmroot/mingw-vulkan-headers
Cloning into '/var/lib/mock/f40-build-2228625-53093/root/chroot_tmpdir/scmroot/mingw-vulkan-headers'...
$ git fetch origin 68ab78fba2cf0bea1c78238ebfec9634224c3749:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-vulkan-headers
 * [new ref]         68ab78fba2cf0bea1c78238ebfec9634224c3749 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68ab78f Update to 1.3.268.0