$ git clone -n https://src.fedoraproject.org/rpms/rust-linux_proc.git /var/lib/mock/f40-build-2037697-48120/root/chroot_tmpdir/scmroot/rust-linux_proc
Cloning into '/var/lib/mock/f40-build-2037697-48120/root/chroot_tmpdir/scmroot/rust-linux_proc'...
$ git fetch origin 8c3836f4bddb02c78fda53302036a92dba60878b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-linux_proc
 * [new ref]         8c3836f4bddb02c78fda53302036a92dba60878b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c3836f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild