$ git clone -n https://src.fedoraproject.org/rpms/rust-take_mut.git /var/lib/mock/f39-build-1517289-35710/root/chroot_tmpdir/scmroot/rust-take_mut
Cloning into '/var/lib/mock/f39-build-1517289-35710/root/chroot_tmpdir/scmroot/rust-take_mut'...
$ git fetch origin e1d770a2ec38f1dc01375837996114542aa78262:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-take_mut
 * [new ref]         e1d770a2ec38f1dc01375837996114542aa78262 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1d770a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild