$ git clone -n https://src.fedoraproject.org/rpms/makebootfat.git /var/lib/mock/f45-build-17957-506/root/chroot_tmpdir/scmroot/makebootfat
Cloning into '/var/lib/mock/f45-build-17957-506/root/chroot_tmpdir/scmroot/makebootfat'...
$ git fetch origin 1e2eb2a23d43bc3d11a59624b7c6f2673a7761bc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/makebootfat
 * [new ref]         1e2eb2a23d43bc3d11a59624b7c6f2673a7761bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e2eb2a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild