$ git clone -n https://src.fedoraproject.org/rpms/rust-getrandom0.1.git /var/lib/mock/f39-build-1521680-35855/root/chroot_tmpdir/scmroot/rust-getrandom0.1
Cloning into '/var/lib/mock/f39-build-1521680-35855/root/chroot_tmpdir/scmroot/rust-getrandom0.1'...
$ git fetch origin 7d1764d05e4cbc9befba50958cab88184184b850:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-getrandom0.1
 * [new ref]         7d1764d05e4cbc9befba50958cab88184184b850 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d1764d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild